THE ANALYSIS OF WATER INRUSH CHARACTERISTICS BY VERTICAL LEAKAGE-CONDUCTION IN NORTH CHINA-TYPE COAL MINE

Based on the analysis of lots of water inrush examples in Jiaozuo Mining District,the concertual model of "water inrush by leakage-conduction" is established. Spreading from this model, this paper discusses the eight characteristics of leakage-conductive conduits which are formed by the strutures including faults, closely spaced fractures, collapse column and so on,thus,providing a basis to describe the characteristics of water inrush by vertical leakage-conduction in North China-type Coal Mine.